2004 Mazda 6 Sport, 4 Door, 5 Speed, Leather,original Owner, Lapis Blue Metallic on 2040-cars

Auto blog

Mazda patents show rotary engine for range-extended EV

Two years ago, Mazda introduced a fascinating range-extended electric car called the Mazda2 RE Range-Extender. It took an electric Mazda2, and dropped in an itty-bitty 330cc rotary engine. It wasn't the rotary-powered sports car we had hoped for, but it seemed like a unique way to keep the quirky engine alive and kicking. But not long after the car's reveal, it seemed to disappear. Now the basic idea has resurfaced with a few modern updates in a couple of US patents. The first patent is pretty straightforward and describes a range-extended EV similar to the BMW i3. At the front is an electric motor driving the front wheels. At the back is an internal combustion engine that powers an electric generator. In the middle is a lithium-ion battery for storing and delivering electricity. It's the same set-up as that Mazda2. The second patent is for an engine start-and-stop system, but specifically for rotary engines. The system is designed to shut off a rotary engine when not needed, much as modern piston engines do. It also stops the rotor in a position that closes the intake port to ensure no fuel or exhaust emissions slip out through the intake tract. This is necessary since there are no valves in a rotary, and air and exhaust come through ports that are "opened" and "closed" by the rotor itself. The patent also describes the possibility of firing a spark plug after the fuel has been cut to eliminate any leftover fuel emissions. This system would theoretically improve a rotary engine's fuel economy and emissions significantly, which would be a boon as those are two of the rotary's major weaknesses. The rotary-engine patent also includes the same range-extended powertrain drawing as the first patent. It's there as a description of a possible application. And in such an application, where the rotary wouldn't have to run all the time, the system could take advantage of the rotary's inherent strengths. Weight can be kept low thanks to the engine's small dimensions, which should help in keeping the car sprightly and efficient. Rotaries are renowned for smoothness, too, so it shouldn't need too much refining and sound deadening, the latter of which adds more weight. The small size would also help with packaging, leaving more space for people, cargo, or possibly batteries. And since it has been patented, the company may be looking to bring the system to market.

Turbocharged 2018 Mazda6 EPA mileage figures released

A few months after the reveal of the new turbocharged variant of the Mazda6, we now know how much more fuel the force-fed family sedan will require. The EPA rating puts it at 31 mpg on the highway, 23 in the city and 26 combined. That is less than the naturally aspirated model with either an automatic transmission or a manual, the former of which gets 35 mpg highway, 26 in town and 29 combined. But the naturally aspirated Mazda6's 184 horsepower and 185 pound-feet of torque are well short of the turbo engine's 250 horsepower and 310 pound-feet. The turbo Mazda6's fuel economy also puts it right in the range of similarly powerful sedans in the mid-size arena. In fact, almost every 2018 2.0-liter turbocharged sedan in the segment gets 26 mpg combined, including Kia Optima, Hyundai Sonata, Chevy Malibu, Buick Regal, and most versions of the Honda Accord, with only a difference of 1 or 2 mpg in city or highway results. The V6 Toyota Camry and Nissan Altima also hit this 26 mpg fuel economy mark. As far as power is concerned, the Mazda6 is also very even with the competition, most of which makes right around 250 horsepower, though the Toyota Camry's naturally aspirated V6 is a class-leader at 301 horsepower. But the 6's advantage is in torque. None of the mainstream family sedans touch the Mazda's whopping 310 pound-feet. The 2.0-liter Honda Accord and Ford Fusion come the closest at 273 and 275 pound-feet respectively. To beat the Mazda6 would require going for the Ford Fusion Sport, which is a unique step up in the segment with a turbocharged V6 making 380 pound-feet. The Fusion Sport takes a serious hit in the fuel economy department, though, getting just 20 mpg combined. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Mazda MX-30 electric car production begins: Will it get the rotary range extender?

Mazda has officially started production of the electric MX-30. For the time being, the small electric car hasn’t been announced for the U.S. yet. Mazda hasnÂ’t declared otherwise, though, so we still have our hopes up. The first MX-30s are rolling off the line in Hiroshima, Japan. Europe will be one of the first places where these MX-30s end up. The car starts at GBP30,495 in the UK and ˆ33,990 in Germany. That's around $38,000. Certainly expensive, but the price would surely be different here, plus weÂ’d be eligible for the full $7,500 tax credit. Those lucky European customers will be met with an electric car that likes to do things a little differently than others. The modest 35.5 kWh battery pack is good for just 124 miles on EuropeÂ’s optimistic WLTP testing cycle. It would surely achieve a much lower number in the EPA test. Mazda has made it front-wheel drive, placing a single motor on the front axle thatÂ’s good for 143 horsepower. We expect to see the first ones hit the streets in Europe this fall, but thereÂ’s one thing that makes us hold out hope for an American MX-30: the potential for a rotary range extender. Mazda said as much in its 100-year celebration letter: “Later, the company developed a prototype Mazda2 EV with a small single-rotor engine used as a range extender. A similar system could find its way onto the Mazda MX-30, a brand new battery electric crossover SUV arriving at dealerships this year." Assuming Mazda goes through with a rotary range extender, we could see this car coming to the American market. That would up the range considerably and make it a much more viable option for many customers, even if they might not need the added range on a daily basis.  Related video: